12280617 has 12 divisors (see below), whose sum is σ = 17795700. Its totient is φ = 8160768.

The previous prime is 12280591. The next prime is 12280621. The reversal of 12280617 is 71608221.

It can be written as a sum of positive squares in 2 ways, for example, as 3154176 + 9126441 = 1776^2 + 3021^2 .

It is not a de Polignac number, because 12280617 - 2¹¹ = 12278569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12280687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1009 + ... + 5057.

It is an arithmetic number, because the mean of its divisors is an integer number (1482975).

Almost surely, 2^12280617 is an apocalyptic number.

It is an amenable number.

12280617 is a deficient number, since it is larger than the sum of its proper divisors (5515083).

12280617 is a wasteful number, since it uses less digits than its factorization.

12280617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392 (or 4389 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 12280617 is about 3504.3711276062. The cubic root of 12280617 is about 230.7137061543.

Adding to 12280617 its reverse (71608221), we get a palindrome (83888838).

The spelling of 12280617 in words is "twelve million, two hundred eighty thousand, six hundred seventeen".